how many java virtual machine extst on computer? Just use the command $JAVA_HOME/bin/jps -l, it will list how many JVM instances on you System and show the man class.

• Collections Classes in the new package provide a Stream API to support functional-style operations on streams of elements. The Stream API is integrated into the Collections API, which enables bulk operations on collections, such as sequential or parallel map-reduce transformations. Performance Improvement for HashMaps with Key Collisions

1. Lambda expressions,
2. Method references,
3. Functional interfaces,
4. Stream API,
5. Default methods,
6. Static methods in interface,
7. Optional class,
8. Collectors class,
9. ForEach() method,
10. Parallel Array Sorting,
11. Type and Repating Annotations,
12. IO Enhancements,
13. Concurrency Enhancements,
14. JDBC Enhancements etc.